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A person hears a sound with a frequency of 100 Hertz. How often does a crest of the sound wave enter the listener’s ear?

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Who was the first scientist to measure speed as distance over time?